What is the air quality trend in Oak Lawn?

Over the past 7 days, Oak Lawn had an average AQI of 28 based on station measurements. The worst day was 2026-10-20 with AQI 51.

How is Oak Lawn air quality measured?

Air quality in Oak Lawn is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Oak Lawn, United States

Name: Oak Lawn Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Oak Lawn, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 278 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-20	51	25–70	13.3 µg/m³	1.1	24h	249
2026-10-19	28	22–41	6.7 µg/m³	3.4	24h	283
2026-10-18	23	18–35	5.4 µg/m³	—	24h	260
2026-10-17	16	13–23	3.9 µg/m³	4.5	24h	283
2026-10-16	19	10–39	4.6 µg/m³	1.1	24h	271
2026-10-15	24	14–41	5.7 µg/m³	1.6	24h	282
2026-10-14	38	18–54	9.1 µg/m³	1.6	22h	281

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